Adam Lee Posted February 20, 2006 Share Posted February 20, 2006 What's going on with the soob? Fuel Pump Diagnosis? Hello, everyone - I've been gone awhile, life/job/kids/etc....you know how it is. Well, the soob in my life (which until recently had been running like a champ, torque-bind notwithstanding) has decided to run progressively poopier the last month or so. Yes, some basic health care for my car might be the answer, but I went ahead and changed a new fuel filter and air filter as well as oil/filter change about a month ago, and nothing really changed performance-wise. Here's what she's doing: Starts up fairly well, no big smoke cloud, but randomly erratic idle (very lopey/bumpy - then smooth), and when I drive off, unless I am super-gentle on the accelerator (I'm talking bEYOND imagining an egg under the pedal) she stutters and pops a bit, kind of backfiring sounds....then it goes away, just as soon as it starts! On the road, she's smooth on the hi-speed end, but in stop-go city driving, she's erratic again. clues: I replaced the main oil seal and timing belt and that was done by me, and it's holding up fine, timing seemed just fine, although I haven't shone a light on it... the throttle body is'nt leaking fuel or anything all cables/accelerator linkage seem smooth and not binding... last clue: my starter switch is acting up as well; sometimes it takes twenty turns of the key until something fires, others, the starter kicks right in. I bought a terminal kit for the starter, but haven't put it on yet. my theories: OK, the basics...spark plug wires, plugs, (but they were replaced recently also), coil, fuel pressure regulator, bad fuel injector, ? car is a 94 Leg Lsi with non-turbo 2.2 and AT/AWD....156k miles I'm thinking fuel pump, myself.... thanks! Link to comment Share on other sites More sharing options...
Legacy777 Posted February 21, 2006 Share Posted February 21, 2006 I'd try replacing the coolant temp sensor. I'd also recommend seafoaming the engine, and running a can through the gas. Link to comment Share on other sites More sharing options...
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